Record Display for the EPA National Library Catalog


Main Title Development of revised light-duty-vehicle emission-average speed relationships /
Author Smith, Malcolm. ; Aldrich., Tom
Other Authors
Author Title of a Work
Aldrich, Tom.
CORP Author Olson Labs., Inc., Anaheim, Calif.;Environmental Protection Agency, Ann Arbor, Mich. Emission Control Technology Div.
Publisher U.S. Environmental Protection Agency, Office of Air and Waste Management, Office of Mobile Source Air Pollution Control, Emission Control Technology Division,
Year Published 1977
Report Number EPA 460-3-77-011; EPA-68-03-2222
Stock Number PB-275 763
OCLC Number 41713548
Subjects Automobiles--Motors--Exhaust gas--Analysis
Additional Subjects Air pollution ; Exhaust emissions ; Fuel consumption ; Statistical analysis ; Hydrocarbons ; Carbon monoxide ; Nitrogen oxides ; Revisions ; Light duty vehicles ; Fuel economy
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 460-3-77-011 Headquarters Library/Washington,DC 12/23/2019
ELCD  EPA 460/3-77-011 NVFEL Library/Ann Arbor, MI 06/27/2017
NTIS  PB-275 763 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, [255] pages ; 28 cm
This report presents the results entitled 'Development of Revised Light-Duty Vehicle Emission Average Speed Relationships.' The two-fold purpose of the program was (1) to perform a statistical analysis of the GM chase-car data, and (2) to establish regressions of fuel consumption and emissions on average speed over driving cycles generated from combined GM and CAPE-10 data. Ten cycles were selected at each of 11 nominal speeds ranging from 5 mph to 55 mph. Hot-start estimates of HC, CO, NOx (all in units of grams per mile), and fuel consumption (in units of miles per gallon) over each of the cycles were obtained for each of 18 model-year groups. The emissions and fuel consumption estimates were regressed on average speed to yield the desired emission-average speed relationship for each model-year group. The equations were then normalized to 19.6 mph, the average speed over the FTP cycle, to yield correction-factor equations. Groups were combined to give composite correction-factor equations for 1975 vehicle population in low-altitude cities and for 1974 vehicle population in high-altitude cities.
"EPA 460-3-77-011." "August 1977." Cover title. EPA contract no. 68-03-2222; EPA project officer: Ronald E. Kruse. Chiefly tables. Includes bibliographical references (page 66).